<template>
	<el-breadcrumb class="app-breadcrumb" separator=">">
		<transition-group name="breadcrumb">
			<el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
				<!-- <span class="no-redirect">{{ item.meta.title }}</span> -->
				<span v-if="item.redirect === 'noRedirect' || index == levelList.length - 1" class="no-redirect">{{ item.meta.title }}</span>
				<a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
			</el-breadcrumb-item>
		</transition-group>
	</el-breadcrumb>
</template>

<script>
	// import pathToRegexp from 'path-to-regexp'

	export default {
		data() {
			return {
				levelList: null,
			}
		},
		watch: {
			$route(route) {
				// if you go to the redirect page, do not update the breadcrumbs
				if (route.path.startsWith('/redirect/')) {
					return
				}
				this.getBreadcrumb()
			},
		},
		created() {
			this.getBreadcrumb()
		},
		methods: {
			getBreadcrumb() {
				// only show routes with meta.title
				let matched = this.$route.matched.filter(item => item.meta && item.meta.title)
				// const first = matched[0]

				// if (!this.isDashboard(first)) {
				//   matched = [{ path: '/dashboard', meta: { title: 'Dashboard' } }].concat(matched)
				// }

				this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
			},
			isDashboard(route) {
				const name = route && route.name
				if (!name) {
					return false
				}
				return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
			},
			// pathCompile(path) {
			//   // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
			//   const { params } = this.$route
			//   var toPath = pathToRegexp.compile(path)
			//   return toPath(params)
			// },
			handleLink(item) {
				const { redirect, path } = item
				if (redirect) {
					this.$router.push(redirect)
					return
				}
				console.log(item,this.levelList);
				// this.$router.push(this.pathCompile(path))
			},
		},
	}
</script>

<style lang="scss" scoped>
	.app-breadcrumb.el-breadcrumb {
		display: inline-block;
		font-size: 14px;
		line-height: 50px;
		margin-left: 8px;
		a {
			color: #999999;
		}
		.no-redirect {
			color: #333333;
			cursor: text;
		}
	}
</style>
